Germanium Detectors in Homeland Security at PNNL

2nd Workshop on Germanium Detectors and Technologies

Stave, S.^1,2

Staff Scientist, Pacific Northwest National Laboratory, Richland

WA

99352, United States^1

902 Battelle Blvd, PO Box 999, MSIN J4-65, Richland

WA

99352, United States^2

关键词: Gamma-ray detection;    Germanium detector;    High purity germaniums;    Low background;    Lower energies;    Non-proliferation;    Security application;    Very high energies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/606/1/012018/pdf
DOI  :  10.1088/1742-6596/606/1/012018

来源: IOP

【 摘 要 】

Neutron and gamma-ray detection is used for non-proliferation and national security applications. While lower energy resolution detectors such as NaI(Tl) have their place, high purity germanium (HPGe) also has a role to play. A detection with HPGe is often a characterization due to the very high energy resolution. However, HPGe crystals remain small and expensive leaving arrays of smaller crystals as an excellent solution. PNNL has developed two similar HPGe arrays for two very different applications. One array, the Multisensor Aerial Radiation Survey (MARS) detector is a fieldable array that has been tested on trucks, boats, and helicopters. The CASCADES HPGe array is an array designed to assay samples in a low background environment. The history of HPGe arrays at PNNL and the development of MARS and CASCADES will be detailed in this paper along with some of the other applications of HPGe at PNNL.